WO2013167598A2 - A process for application of metal - Google Patents
A process for application of metal Download PDFInfo
- Publication number
- WO2013167598A2 WO2013167598A2 PCT/EP2013/059500 EP2013059500W WO2013167598A2 WO 2013167598 A2 WO2013167598 A2 WO 2013167598A2 EP 2013059500 W EP2013059500 W EP 2013059500W WO 2013167598 A2 WO2013167598 A2 WO 2013167598A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- metal
- photoinitiator
- substrate surface
- group
- solvent
- Prior art date
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/18—Pretreatment of the material to be coated
- C23C18/1803—Pretreatment of the material to be coated of metallic material surfaces or of a non-specific material surfaces
- C23C18/1824—Pretreatment of the material to be coated of metallic material surfaces or of a non-specific material surfaces by chemical pretreatment
- C23C18/1837—Multistep pretreatment
- C23C18/1844—Multistep pretreatment with use of organic or inorganic compounds other than metals, first
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
- B05D7/54—No clear coat specified
- B05D7/548—No curing step for the last layer
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
- C08J7/0423—Coating with two or more layers, where at least one layer of a composition contains a polymer binder with at least one layer of inorganic material and at least one layer of a composition containing a polymer binder
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/1601—Process or apparatus
- C23C18/1603—Process or apparatus coating on selected surface areas
- C23C18/1607—Process or apparatus coating on selected surface areas by direct patterning
- C23C18/1608—Process or apparatus coating on selected surface areas by direct patterning from pretreatment step, i.e. selective pre-treatment
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/1601—Process or apparatus
- C23C18/1603—Process or apparatus coating on selected surface areas
- C23C18/1607—Process or apparatus coating on selected surface areas by direct patterning
- C23C18/1612—Process or apparatus coating on selected surface areas by direct patterning through irradiation means
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/18—Pretreatment of the material to be coated
- C23C18/1803—Pretreatment of the material to be coated of metallic material surfaces or of a non-specific material surfaces
- C23C18/1813—Pretreatment of the material to be coated of metallic material surfaces or of a non-specific material surfaces by radiant energy
- C23C18/182—Radiation, e.g. UV, laser
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/18—Pretreatment of the material to be coated
- C23C18/1851—Pretreatment of the material to be coated of surfaces of non-metallic or semiconducting in organic material
- C23C18/1862—Pretreatment of the material to be coated of surfaces of non-metallic or semiconducting in organic material by radiant energy
- C23C18/1868—Radiation, e.g. UV, laser
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/18—Pretreatment of the material to be coated
- C23C18/1851—Pretreatment of the material to be coated of surfaces of non-metallic or semiconducting in organic material
- C23C18/1872—Pretreatment of the material to be coated of surfaces of non-metallic or semiconducting in organic material by chemical pretreatment
- C23C18/1875—Pretreatment of the material to be coated of surfaces of non-metallic or semiconducting in organic material by chemical pretreatment only one step pretreatment
- C23C18/1882—Use of organic or inorganic compounds other than metals, e.g. activation, sensitisation with polymers
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/18—Pretreatment of the material to be coated
- C23C18/20—Pretreatment of the material to be coated of organic surfaces, e.g. resins
- C23C18/2006—Pretreatment of the material to be coated of organic surfaces, e.g. resins by other methods than those of C23C18/22 - C23C18/30
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/18—Pretreatment of the material to be coated
- C23C18/20—Pretreatment of the material to be coated of organic surfaces, e.g. resins
- C23C18/2006—Pretreatment of the material to be coated of organic surfaces, e.g. resins by other methods than those of C23C18/22 - C23C18/30
- C23C18/2026—Pretreatment of the material to be coated of organic surfaces, e.g. resins by other methods than those of C23C18/22 - C23C18/30 by radiant energy
- C23C18/204—Radiation, e.g. UV, laser
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/18—Pretreatment of the material to be coated
- C23C18/20—Pretreatment of the material to be coated of organic surfaces, e.g. resins
- C23C18/2006—Pretreatment of the material to be coated of organic surfaces, e.g. resins by other methods than those of C23C18/22 - C23C18/30
- C23C18/2046—Pretreatment of the material to be coated of organic surfaces, e.g. resins by other methods than those of C23C18/22 - C23C18/30 by chemical pretreatment
- C23C18/2073—Multistep pretreatment
- C23C18/2086—Multistep pretreatment with use of organic or inorganic compounds other than metals, first
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/18—Pretreatment of the material to be coated
- C23C18/20—Pretreatment of the material to be coated of organic surfaces, e.g. resins
- C23C18/28—Sensitising or activating
- C23C18/30—Activating or accelerating or sensitising with palladium or other noble metal
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2355/00—Characterised by the use of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08J2323/00 - C08J2353/00
- C08J2355/02—Acrylonitrile-Butadiene-Styrene [ABS] polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/02—Homopolymers or copolymers of acids; Metal or ammonium salts thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
Definitions
- the present invention relates generally to a method of applying a metal on a substrate surface.
- WO 98/34446 discloses a method to apply conducting materials in distinct patterns on organic substrates, the surface layer is chemically modified to achieve distinct adhesion areas according to said distinct pattern, after which conducting material is applied to these areas.
- WO 2007/116056 discloses a method for applying a metal on a substrate, comprising: a) producing polymers on the surface of the substrate, where the polymers comprise carboxylic groups and adsorbed ions of at least one other metal, b) reducing the ions to the second metal and c) depositing the first metal on the reduced ions.
- Plasma treatment is mentioned as in an initial step in order to improve the wetting of the subsequent solutions that are applied to the surface, and as a cleaning step.
- No method fulfills the requirements with regards to: Handling of parts in the process, robustness. Productivity and line speed. Grafting onto different polymer surfaces. For instance it is a problem in the state of the art to apply metal onto inert and sensitive materials.
- Example of a sensitive material includes but is not limited to PC-ABS. Further halogen containing materials are known to be difficult to coat. A process which allows coating of both 2D and 3D substrates is also difficult to obtain.
- photoinitiators tend to crystallize. For instance benzophenone is difficult of impossible to use as a photoinitiator in many applications because it forms crystals.
- a method for application of a first metal on a substrate surface comprising the steps: a) providing a mixture comprising at least one solvent, at least one polymerizable monomer, and at least one photoinitiator, wherein said at least one photoinitiator, said at least one polymerizable monomer, and said at least one solvent form an amorphous mixture without any crystals, wherein said at least one polymerizable monomer is able to polymerize to a polymer comprising at least one carboxylic group, and wherein said at least one polymerizable monomer is in monomer form in said mixture, b) applying said mixture at least partially on said substrate surface, said substrate surface comprises covalently bound hydrogen atoms, c) evaporating at least a part of said at least one solvent, d) activating said at least one photoinitiator by irradiation with light at a wavelength adapted to said at least one photoinitiator so that said at least one photoinit
- nanoparticles have an average diameter in the range from 1 to 100 nm, f) if ions of at least one second metal have been applied, at least partially reducing said ions of at least one second metal to metal, g) depositing the first metal on at least one selected from the group consisting of the reduced ions of said at least one second metal and the nanoparticles comprising at least one second metal.
- Both 2D and 3D surfaces can be coated with metal.
- PC-ABS Polycarbonate/Acrylonitrile Butadiene Styrene, - a blend of PC and ABS.
- polymerizable monomer and solvent give a mixture where no crystals occur, i.e. an amorphous mixture.
- Another advantage is that monomers are used to build up the polymers on the surface, this is easier compared to attaching polymers on a surface.
- the new technology is a full additive process with a dry grafting step in
- the photochemistry and the grafting process shall function in a dry state and generate active sites for metal plating on surfaces.
- a relatively fast drying grafting solution the solubility of monomers and photo activators should be optimized, the photochemistry shall work in solid state with high yield of generating grafting sites and polymer chain growing from these sites.
- the impact of oxygen in the process can be minimized through optimizing the thickness of the dry layer or use of protective gases.
- the wavelength of the laser or light used for irradiation should match the absorption of spectra of the photo activator.
- a method for application of a first metal on a substrate surface comprising the steps: a) providing a mixture comprising at least one solvent, at least one
- the steps a-c creates a substrate where the surface at least partially is covered by a layer which subsequently can be irradiated and give a metal coating on the substrate surface.
- a coated surface can be kept for at least several weeks and still be used for preparing a metal surface, i.e. before the steps d-g are performed.
- the viscosity of the dried layer, i.e. after step c when the solvent has been evaporated is such that it stays on the substrate.
- the method further comprises the steps: d-g.
- anoparticles are particles smaller than 100 nm.
- the at least one solvent is evaporated to more than 80 % calculated by weight in step c). In one embodiment the at least one solvent is evaporated to more than 90 % calculated by weight. In one embodiment the at least one solvent is evaporated to more than 95 % calculated by weight.
- the solvent is at least one solvent selected from different solvents including alcohols, ethers and esters. When more than one solvent is used this refers to a mixture of solvents, which should form one phase, i.e. be soluble in each other and not form two phases.
- the at least one solvent is at least one solvent selected from the group consisting of methanol, ethanol, acetone, ethyl acetate, and ethylene glycol.
- the at least one polymerizable monomer comprises at least one carboxylic acid group. In one embodiment the at least one
- polymerizable monomer is at least one selected from the group consisting of methacrylic acid, acrylic acid, and maleic acid.
- the at least one photoinitiator is at least one
- photoinitiator selected from the group consisting of antraquinone, thioxanthone, isopropyl thioxanthone, chlorothioxanthone, xanthone, benzophenone, and fluorenone.
- the at least one photoinitiator is activated in step d) by irradiation with light in a desired pattern on said substrate surface.
- the at least one photoinitiator is activated in step d) by irradiation with at least one type of light selected from the group consisting of laser light, focused laser light, and focused light. The light is focused on the parts of the substrate surface where it is desired to have a metal coating.
- the at least one photoinitiator is activated in step d) by irradiation with at least one selected from laser light, and light in combination with at least one mask.
- the mask is positioned between the substrate surface and the light source. In one embodiment the mask is positioned directly on the substrate surface.
- the substrate surface is a two dimensional plane.
- the substrate surface is a three dimensional surface. It is easy to apply the solution to both two dimensional surface and three dimensional surfaces. This is both due to the viscosity of the mixture and the fact that a photoinitiator is used so that the reaction can be initiated by focusing light on the desired part. Focusing light can be done both on a 2 dimensional plane as well as on most 3-dimensional objects.
- the substrate surface is treated with plasma before step b).
- the thickness of the applied mixture is 5-200 pm.
- the thickness is measured on the areas on the substrate where the mixture is applied. The thickness is measured when the solvent has been evaporated to more than 80% calculated by weight. For best accuracy the thickness should be measured when the solvent is evaporated to 95% calculated by weight.
- the thickness 5-200 pm refers to a state when the solvent is evaporated to 95% calculated by weight.
- the substrate comprises a circuit.
- the substrate is a printed wire board.
- the substrate is an antenna intended for radio frequent electromagnetic waves.
- the substrate is an antenna for telecommunication.
- the substrate is a fuel cell.
- the substrate is a solar cell.
- the substrate is a light reflector.
- the substrate is an automotive light reflector.
- the substrate comprises plastic.
- the substrate is a container.
- the substrate is a container intended for liquids.
- the substrate is a bottle.
- the substrate is a container intended for perfume.
- the substrate comprises more than one layer of conductors, which conductors are electrically insulated from each other. There is provided the possibility to form a circuit in several layers by applying several layers of conductive metal with insulating material in between.
- Examples of monomers, solvents and initiators that work well together and form an amorphous mixture without crystals include but are not limited to:
- Rz is defined as the average distance between the highest peak and lowest valley. It is the average of five Rzi values from five reference lengths Ir within an evaluation length. It is defined according to SS-EN ISO 4287:1998. For Rz below 100 ⁇ the adhesion to the surface is excellent for coated substrates. Otherwise so smooth surface are difficult to coat with metal with high adhesion. In particular
- an object coated with a metal said object being at least partly coated with covalently bound polymers comprising carboxylic groups, said object further being coated with a metal on the covalently bound polymers, said object having a surface roughness Rz of less than 100 pm before coating measured according to SS-EN ISO 4287:1998, wherein the coating of the object has an adhesion equal to or larger than 10 N/cm, measured according to ASTM D1876.
- the object to be coated comprises a polymer before application of the coating.
- the object is transparent.
- the substrate further comprises at least one selected from the group consisting of a filler, a pigment, and a fiber.
- the object having a surface roughness Rz of less than 50 ⁇ before coating In one embodiment the object having a surface roughness Rz of less than 1 1 pm before coating. In one embodiment the object having a surface roughness Rz of less than 2 pm before coating.
- the coating of the object has an adhesion equal to or larger than 14 N/cm, measured according to ASTM D1876.
- the solution was sprayed by an air spray gun to a panel made of PA 6/PA 66 polymer filled with carbon black and glass fiber (50 weight-%) of 8 x 8 cm size.
- the dry thickness was varied from 10 pm to 50 pm. Drying time (sample could be handle without damaging the dry grafting layer) varied from 10 seconds to 40 seconds at room temperature dependent on wet film thickness.
- the panels were irradiated with a 2W laser emitting light at 355 nm.
- the irradiated pattern was straight lines of 180 pm with a distance of 400 pm between the lines.
- the solution was sprayed by an air spray gun to a panel made of PA 6 polymer filled with carbon black and glass fiber (50 wt%) of 8 x 8 cm size.
- the dry thickness was varied from 10 pm to 50 ⁇ . Drying time (sample could be handle without damaging the dry grafting layer) varied from 10 seconds to 40 seconds at room temperature dependent on wet film thickness.
- the panels were irradiated with a 2W laser emitting light at 355 nm.
- the samples were irradiated with energy of 900 mJ/cm 2 .
- the spot diameter was 120 ⁇ .
- the irradiated pattern was straight lines of 180 ⁇ with a distance of 400 ⁇ between the lines.
- results on the panels were straight lines of copper with a line width between 178 to 182 pm and a distance of 400 pm between the copper lines with film thickness of 0.8 to 1 .2 pm.
- the solution was sprayed by an air spray gun to a panel made of PA 6/PA 66 polymer filled with carbon black and glass fiber (50 weight-%) of 8 x 8 cm size.
- the dry thickness was varied from 10 pm to 50 pm. Drying time (sample could be handle without damaging the dry grafting layer) varied from 10 seconds to 40 seconds at room temperature dependent on wet film thickness.
- the panels were irradiated with a 4W laser emitting light at 355 nm.
- the samples were irradiated with different energy dependent on laser speed and number of repetition.
- the spot diameter was 120 ⁇ .
- the irradiated pattern was straight lines of 180 ⁇ with a distance of 400 ⁇ between the lines.
- the solution was sprayed by an air spray gun to a panel made of PA 6/ PA 66 polymer filled with carbon black and glass fiber (50 weight-%) of 8 x 8 cm size.
- the dry thickness was varied from 10 pm to 50 pm. Drying time (sample could be handle without damaging the dry grafting layer) varied from 10 seconds to 40 seconds at room temperature dependent on wet film thickness.
- the panels were irradiated with a 2W laser emitting light at 355 nm.
- the irradiated pattern was straight lines of 180 pm with a distance of 400 pm between the lines.
- the solution was sprayed by an air spray gun to a panel made of COC polymer of 8 x 8 cm size.
- the dry thickness was 25 pm. Drying time (sample could be handle without damaging the dry grafting layer) was 40 seconds at room temperature.
- the panels were irradiated with a 2W laser emitting light at 355 nm.
- the diameter was varied from 5 pm to 200 pm.
- the irradiated pattern was straight lines.
- the line width was varied from 5 pm to 5000 pm.
- the solution was sprayed by an air spray gun to different panels (see table below) of 8 x 8 cm size.
- the dry thickness was 20 pm. Drying time (sample could be handle without damaging the dry grafting layer) varied from 30 to 50 seconds at room temperature.
- the panels were irradiated with a 4W laser emitting light at 355 nm.
- the irradiated pattern was straight lines of 180 pm with a distance of 400 pm between the lines.
- Example 7 main components are methacrylic acid, acetone, ethanol, and isopropyl thioxanthone on a high gloss surface of PA6 (Rz ⁇ 0,5 pm). Gives 14 N/cm in adhesion.
- Example 8 main components are acrylic acid, methanol, ethanol, and
- Example 9 Main components maleic acid, ethylacetate, and bensofenone derivative on a glossy surface of PA6 filled with 30 % glass fiber ( ⁇ 2.0 pm between valley and peak). Gives 16 N/cm in adhesion.
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Abstract
A process for application of metal on a substrate surface comprises applying a mixture of a solvent, a polymerizable monomer, and a photoinitiator on a substrate surface, wherein the photoinitiator does not form two phases together with the monomer and the solvent, i.e. it forms an amorphous mixture without any crystals. The monomer is able to polymerize to a polymer comprising at least one carboxylic group. Thereafter the solvent is evaporated. Polymerization is induced by irradiating the applied dried mixture. Ions are applied and reduced to metal and thereafter further metal can be deposited. The method can be used in industrial processes, both 2D and 3D surfaces can be coated with metal. Materials sensitive to standard grafting chemicals and/or polymers containing halogen atoms can be coated.
Description
A PROCESS FOR APPLICATION OF METAL
Technical field
[0001 ]The present invention relates generally to a method of applying a metal on a substrate surface.
Background
[0002] In prior art many different methods of applying a metal on a substrate
surface are described.
[0003]WO 98/34446 discloses a method to apply conducting materials in distinct patterns on organic substrates, the surface layer is chemically modified to achieve distinct adhesion areas according to said distinct pattern, after which conducting material is applied to these areas.
[0004] WO 2007/116056 discloses a method for applying a metal on a substrate, comprising: a) producing polymers on the surface of the substrate, where the polymers comprise carboxylic groups and adsorbed ions of at least one other metal, b) reducing the ions to the second metal and c) depositing the first metal on the reduced ions. Plasma treatment is mentioned as in an initial step in order to improve the wetting of the subsequent solutions that are applied to the surface, and as a cleaning step.
[0005]WO 2007/116057 discloses the above process applied to paper.
[0006]A large problem today is the industrialization of the full additive processes regarding handling and productivity in production. Today processes with wet grafting chemistry are used. This creates problems in the production lines when it comes to handling and robustness.
[0007] No method fulfills the requirements with regards to: Handling of parts in the process, robustness. Productivity and line speed. Grafting onto different polymer surfaces. For instance it is a problem in the state of the art to apply metal onto inert and sensitive materials. Example of a sensitive material
includes but is not limited to PC-ABS. Further halogen containing materials are known to be difficult to coat. A process which allows coating of both 2D and 3D substrates is also difficult to obtain.
[0008]Sensitive substrate cannot always be coated using the methods according to the state of the art, since the substrate may be sensitive to the grafting chemicals and/or process conditions.
[0009]Another problem in the prior art is the use of some photoinitiators in
connection with production of polymers on a surface, since many
photoinitiators tend to crystallize. For instance benzophenone is difficult of impossible to use as a photoinitiator in many applications because it forms crystals.
Summary
[0010] It is an object of the present invention to obviate at least some of the
disadvantages in the prior art and to provide an improved method for applying metal on a substrate.
In a first aspect there is provided a method for application of a first metal on a substrate surface, said method comprising the steps: a) providing a mixture comprising at least one solvent, at least one polymerizable monomer, and at least one photoinitiator, wherein said at least one photoinitiator, said at least one polymerizable monomer, and said at least one solvent form an amorphous mixture without any crystals, wherein said at least one polymerizable monomer is able to polymerize to a polymer comprising at least one carboxylic group, and wherein said at least one polymerizable monomer is in monomer form in said mixture, b) applying said mixture at least partially on said substrate surface, said substrate surface comprises covalently bound hydrogen atoms, c) evaporating at least a part of said at least one solvent, d) activating said at least one photoinitiator by irradiation with light at a wavelength adapted to said at least one photoinitiator so that said at least one photoinitiator decomposes into at least one free radical, so that said at least one free radical initiates a
polymerization reaction among said at least one polymerizable monomers and induce a reaction between said covalently bound hydrogen atoms on said substrate surface and a fraction of said at least one polymerizable monomers, to obtain polymers on the surface of said substrate, wherein said polymers comprise at least one carboxylic group, and wherein at least a fraction of said polymers formed are covalently bound to said surface, e) applying at least one selected from the group consisting of ions of at least one second metal and nanoparticles comprising at least one second metal, wherein said
nanoparticles have an average diameter in the range from 1 to 100 nm, f) if ions of at least one second metal have been applied, at least partially reducing said ions of at least one second metal to metal, g) depositing the first metal on at least one selected from the group consisting of the reduced ions of said at least one second metal and the nanoparticles comprising at least one second metal.
[001 1]Further aspects and embodiments are defined in the appended dependent claims, which are specifically incorporated herein by reference.
[0012]One advantage is that the current method at least obviates handling
problems with wet surfaces in industrial processes.
[0013] Both 2D and 3D surfaces can be coated with metal.
[0014] Polymers sensitive to standard grafting chemicals or polymers containing halogen atoms can be coated using the method, since it is generally gentler compared to the grafting chemicals commonly utilized. One non limiting example of a sensitive material is PC-ABS. (Polycarbonate/Acrylonitrile Butadiene Styrene, - a blend of PC and ABS).
[0015]Photoinitiators which otherwise form crystals making them very difficult or impossible to use can be used, since the mixture of photoinitiator,
polymerizable monomer and solvent give a mixture where no crystals occur, i.e. an amorphous mixture.
[0016] Another advantage is that monomers are used to build up the polymers on the surface, this is easier compared to attaching polymers on a surface.
Detailed description
[0017] Before the invention is disclosed and described in detail, it is to be
understood that this invention is not limited to particular compounds, configurations, method steps, substrates, and materials disclosed herein as such compounds, configurations, method steps, substrates, and materials may vary somewhat. It is also to be understood that the terminology employed herein is used for the purpose of describing particular embodiments only and is not intended to be limiting since the scope of the present invention is limited only by the appended claims and equivalents thereof.
[0018] It must be noted that, as used in this specification and the appended claims, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise.
[0019] If nothing else is defined, any terms and scientific terminology used herein are intended to have the meanings commonly understood by those of skill in the art to which this invention pertains.
[0020]Amorphous in connection with a mixture indicates that the mixture does not comprise any crystals.
[0021 ]The new technology is a full additive process with a dry grafting step in
combination with irradiation with light for metal plating on substrate surfaces, including but not limited to polymer substrates. There is today no known dry grafting process commercially available or described in literature, because reactions in solid phase in general are very slow and have low yield for grafting onto polymer surfaces. The new technology solves these drawbacks.
[0022]The photochemistry and the grafting process shall function in a dry state and generate active sites for metal plating on surfaces. To achieve this it is preferred to have: a relatively fast drying grafting solution, the solubility of
monomers and photo activators should be optimized, the photochemistry shall work in solid state with high yield of generating grafting sites and polymer chain growing from these sites. The impact of oxygen in the process can be minimized through optimizing the thickness of the dry layer or use of protective gases.
[0023]The wavelength of the laser or light used for irradiation should match the absorption of spectra of the photo activator.
[0024] In a first aspect there is provided a method for application of a first metal on a substrate surface, said method comprising the steps: a) providing a mixture comprising at least one solvent, at least one
polymerizable monomer, and at least one photoinitiator, wherein said at least one photoinitiator, said at least one polymerizable monomer, and said at least one solvent form an amorphous mixture without any crystals, wherein said at least one polymerizable monomer is able to polymerize to a polymer comprising at least one carboxylic group, and wherein said at least one polymerizable monomer is in monomer form in said mixture, b) applying said mixture at least partially on said substrate surface, said substrate surface comprises covalently bound hydrogen atoms, c) evaporating at least a part of said at least one solvent. d) activating said at least one photoinitiator by irradiation with light at a wavelength adapted to said at least one photoinitiator so that said at least one photoinitiator decomposes into at least one free radical, so that said at least one free radical initiates a polymerization reaction among said at least one polymerizable monomers and induce a reaction between said covalently bound hydrogen atoms on said substrate surface and a fraction of said at least one polymerizable monomers, to obtain polymers on the surface of said substrate, wherein said polymers comprise at least one carboxylic group, and wherein at least a fraction of said polymers formed are covalently bound to said surface,
e) applying at least one selected from the group consisting of ions of at least one second metal and nanoparticles comprising at least one second metal, wherein said nanoparticles have an average diameter in the range from 1 to 100 nm, f) if ions of at least one second metal have been applied, at least partially reducing said ions of at least one second metal to metal, g) depositing the first metal on at least one selected from the group consisting of the reduced ions of said at least one second metal and the nanoparticles comprising at least one second metal.
[0025]The steps a-c creates a substrate where the surface at least partially is covered by a layer which subsequently can be irradiated and give a metal coating on the substrate surface. Experiments show that a coated surface can be kept for at least several weeks and still be used for preparing a metal surface, i.e. before the steps d-g are performed.
[0026]The viscosity of the dried layer, i.e. after step c when the solvent has been evaporated is such that it stays on the substrate.
[0027] In order to coat the substrate surface at least partially with metal the method further comprises the steps: d-g.
[0028] anoparticles are particles smaller than 100 nm.
[0029] In one embodiment the at least one solvent is evaporated to more than 80 % calculated by weight in step c). In one embodiment the at least one solvent is evaporated to more than 90 % calculated by weight. In one embodiment the at least one solvent is evaporated to more than 95 % calculated by weight.
[0030]The solvent is at least one solvent selected from different solvents including alcohols, ethers and esters. When more than one solvent is used this refers to a mixture of solvents, which should form one phase, i.e. be soluble in each other and not form two phases. In one embodiment the at least one solvent is
at least one solvent selected from the group consisting of methanol, ethanol, acetone, ethyl acetate, and ethylene glycol.
[0031] In one embodiment the at least one polymerizable monomer comprises at least one carboxylic acid group. In one embodiment the at least one
polymerizable monomer is at least one selected from the group consisting of methacrylic acid, acrylic acid, and maleic acid.
[0032] In one embodiment the at least one photoinitiator, is at least one
photoinitiator selected from the group consisting of antraquinone, thioxanthone, isopropyl thioxanthone, chlorothioxanthone, xanthone, benzophenone, and fluorenone.
[0033] In one embodiment the at least one photoinitiator is activated in step d) by irradiation with light in a desired pattern on said substrate surface. In one embodiment the at least one photoinitiator is activated in step d) by irradiation with at least one type of light selected from the group consisting of laser light, focused laser light, and focused light. The light is focused on the parts of the substrate surface where it is desired to have a metal coating. In one
embodiment the at least one photoinitiator is activated in step d) by irradiation with at least one selected from laser light, and light in combination with at least one mask. The mask is positioned between the substrate surface and the light source. In one embodiment the mask is positioned directly on the substrate surface.
[0034] In one embodiment at least one of the steps b, c, and d in claim 1 are
performed in an environment with a reduced level of oxygen compared to a normal atmosphere in order to reduce oxygen inhibition of a radical
polymerisation initiator.
[0035]ln one embodiment the substrate surface is a two dimensional plane. In an alternative embodiment the substrate surface is a three dimensional surface. It is easy to apply the solution to both two dimensional surface and three dimensional surfaces. This is both due to the viscosity of the mixture and the
fact that a photoinitiator is used so that the reaction can be initiated by focusing light on the desired part. Focusing light can be done both on a 2 dimensional plane as well as on most 3-dimensional objects.
[0036] In one embodiment the substrate surface is treated with plasma before step b).
[0037] In one embodiment the at least a fraction of polymers which are not
covalently bound to the surface are washed away from said substrate surface after step d). In an alternatively embodiment essentially all polymers which are not covalently bound to the surface are washed away from said substrate surface after step d).
[0038] In one embodiment the thickness of the applied mixture is 5-200 pm. The thickness is measured on the areas on the substrate where the mixture is applied. The thickness is measured when the solvent has been evaporated to more than 80% calculated by weight. For best accuracy the thickness should be measured when the solvent is evaporated to 95% calculated by weight. The thickness 5-200 pm refers to a state when the solvent is evaporated to 95% calculated by weight.
[0039]The applications of metal coated objects are numerous in many different fields. Here non limiting examples of some applications are given. In one embodiment the substrate comprises a circuit. In one embodiment the substrate is a printed wire board. In one embodiment the substrate is an antenna intended for radio frequent electromagnetic waves. In one
embodiment the substrate is an antenna for telecommunication. In one embodiment the substrate is a fuel cell. In one embodiment the substrate is a solar cell. In one embodiment the substrate is a light reflector. In one embodiment the substrate is an automotive light reflector. In one embodiment the substrate comprises plastic. In one embodiment the substrate is a container. In one embodiment the substrate is a container intended for liquids. In one embodiment the substrate is a bottle. In one embodiment the substrate is a container intended for perfume.
[0040] In one embodiment the substrate comprises more than one layer of conductors, which conductors are electrically insulated from each other. There is provided the possibility to form a circuit in several layers by applying several layers of conductive metal with insulating material in between.
[0041 ]The process has been verified with energies down to 300 - 500 mJ/cm2.
[0042] Examples of monomers, solvents and initiators that work well together and form an amorphous mixture without crystals include but are not limited to:
Methacrylic acid + thioxanthone + methanol
Acrylic acid + thioxanthone + methanol
Methacrylic acid + chlorothioxanthone + ethanol
Methacrylic acid + chlorothioxanthone + methanol/ethanol (1 :1 by weight)
Methacrylic acid + isopropyl thioxanthone + acetone/ethanol (1 :1 by weight)
Acrylic acid + fluorenone + methanol/ethanol (1 :1 by weight)
Maleic acid + bensofenone + ethylacetate
[0043] Rz is defined as the average distance between the highest peak and lowest valley. It is the average of five Rzi values from five reference lengths Ir within an evaluation length. It is defined according to SS-EN ISO 4287:1998. For Rz below 100μιτι the adhesion to the surface is excellent for coated substrates. Otherwise so smooth surface are difficult to coat with metal with high adhesion. In particular
[0044] In a second aspect there is provided an object coated with a metal, said object being at least partly coated with covalently bound polymers comprising carboxylic groups, said object further being coated with a metal on the covalently bound polymers, said object having a surface roughness Rz of less than 100 pm before coating measured according to SS-EN ISO 4287:1998,
wherein the coating of the object has an adhesion equal to or larger than 10 N/cm, measured according to ASTM D1876.
[0045] In one embodiment the object to be coated comprises a polymer before application of the coating.
[0046] In one embodiment the object is transparent.
[0047] In one embodiment the substrate further comprises at least one selected from the group consisting of a filler, a pigment, and a fiber.
[0048] In one embodiment the object having a surface roughness Rz of less than 50 μηι before coating. In one embodiment the object having a surface roughness Rz of less than 1 1 pm before coating. In one embodiment the object having a surface roughness Rz of less than 2 pm before coating.
[0049] For Rz below 00pm the adhesion to the surface is excellent for coated substrates. Otherwise so smooth surface are difficult to coat with metal with high adhesion. In particular even smoother surfaces can be coated with excellent adhesion such as Rz = 2 pm or even 0.5 pm.
[0050]ln one embodiment the coating of the object has an adhesion equal to or larger than 14 N/cm, measured according to ASTM D1876.
[0051 ]Other features and uses of the invention and their associated advantages will be evident to a person skilled in the art upon reading the description and the examples.
[0052] It is to be understood that this invention is not limited to the particular
embodiments shown here. The following examples are provided for illustrative purposes and are not intended to limit the scope of the invention since the scope of the present invention is limited only by the appended claims and equivalents thereof.
Examples
Example 1
[0053]A grafting solution consisting of methacrylic acid (1 weight-%), thioxanthone (0.01 weight-%) and methanol was prepared.
[0054]The solution was sprayed by an air spray gun to a panel made of PA 6/PA 66 polymer filled with carbon black and glass fiber (50 weight-%) of 8 x 8 cm size. The dry thickness was varied from 10 pm to 50 pm. Drying time (sample could be handle without damaging the dry grafting layer) varied from 10 seconds to 40 seconds at room temperature dependent on wet film thickness.
[0055]The panels were irradiated with a 2W laser emitting light at 355 nm.
[0056]The samples were irradiated with an energy of 800 mJ/cm2 The spot
diameter was 120 pm. The irradiated pattern was straight lines of 180 pm with a distance of 400 pm between the lines.
[0057]After irradiation were the samples washed in deionized water (DIW). In the next step were the samples activated in a commercial solution containing palladium (II) ions. The palladium ions were reduced to palladium metal by dipping the panel in a commercial reducing media. The panels were then washed in DIW before placing them in a commercial chemical copper bath for copper plating.
[0058]The results on the panels were straight lines of copper with a line width between 178 to 182 μιη and a distance of 400 pm between the copper lines with film thickness of 6 to 8 pm.
Example 2:
[0059]A grafting solution consisting of acrylic acid (1 .2 weight-%), thioxanthone (0.01 weight-%) and etna no I was prepared.
[0060]The solution was sprayed by an air spray gun to a panel made of PA 6 polymer filled with carbon black and glass fiber (50 wt%) of 8 x 8 cm size. The
dry thickness was varied from 10 pm to 50 μιη. Drying time (sample could be handle without damaging the dry grafting layer) varied from 10 seconds to 40 seconds at room temperature dependent on wet film thickness.
[0061 ]The panels were irradiated with a 2W laser emitting light at 355 nm.
[0062]The samples were irradiated with energy of 900 mJ/cm2. The spot diameter was 120 μιη. The irradiated pattern was straight lines of 180 μητι with a distance of 400 μηη between the lines.
[0063] After irradiation were the samples washed in deionized water (DIW). In the next step were the samples activated in a commercial solution containing palladium (II) ions. The palladium ions were reduced to palladium metal by dipping the panel in a commercial reducing media. The panels were then washed in DIW before placing them in a commercial chemical copper bath for copper plating.
[0064]The results on the panels were straight lines of copper with a line width between 178 to 182 pm and a distance of 400 pm between the copper lines with film thickness of 0.8 to 1 .2 pm.
Example 3:
[0065]After different times - laser irradiation, multiple scanning
[0066]A grafting solution consisting of methacrylic acid (1 weight-%),
chlorothioxanthone (0.01 weight-%) and ethanol was prepared.
[0067]The solution was sprayed by an air spray gun to a panel made of PA 6/PA 66 polymer filled with carbon black and glass fiber (50 weight-%) of 8 x 8 cm size. The dry thickness was varied from 10 pm to 50 pm. Drying time (sample could be handle without damaging the dry grafting layer) varied from 10 seconds to 40 seconds at room temperature dependent on wet film thickness.
[0068]The panels were irradiated with a 4W laser emitting light at 355 nm.
[0069]The samples were irradiated with different energy dependent on laser speed and number of repetition. The spot diameter was 120 μιτι. The irradiated pattern was straight lines of 180 μηι with a distance of 400 μιη between the lines.
[0070] After irradiation were the samples washed in deionized water (DIW). In the next step were the samples activated in a commercial solution containing palladium(ll) ions. The palladium ions were reduced to palladium metal by dipping the panel in a commercial reducing media. The panels were then washed in DIW before placing them in a commercial chemical copper bath for copper plating.
[0071 ]The results on the panels were straight lines of copper with a line width between 178 to 182 pm and a distance of 200 pm between the copper lines.
[0072]
Number of repetition of Defined pattern with high Film thickness the laser ray resolution
(pm)
(every pulse 16 ps, laser
scan speed 4 m/s)
(m/s)
2 Yes 1.2-1.4
4 Yes 1.1 -1.3
8 Yes 1.0-1.2
16 Yes 1.1 -1.3
[0073]
Example 4:
[0074] Different film thickness - time in Cu bath
[0075]A grafting solution consisting of methacrylic acid (1 weight-%),
chlorothioxanthone (0.01 weight-%) and methanol/ethanol (1:1) was prepared.
[0076]The solution was sprayed by an air spray gun to a panel made of PA 6/ PA 66 polymer filled with carbon black and glass fiber (50 weight-%) of 8 x 8 cm size. The dry thickness was varied from 10 pm to 50 pm. Drying time (sample
could be handle without damaging the dry grafting layer) varied from 10 seconds to 40 seconds at room temperature dependent on wet film thickness.
[0077]The panels were irradiated with a 2W laser emitting light at 355 nm.
[0078]The samples were irradiated with an energy of 500 mJ/cm2. The spot
diameter was 120 pm. The irradiated pattern was straight lines of 180 pm with a distance of 400 pm between the lines.
[0079]After irradiation were the samples washed in deionized water (DIW). In the next step were the samples activated in a commercial solution containing palladium (II) ions. The palladium ions were reduced to palladium metal by dipping the panel in a commercial reducing media. The panels were then washed in DIW before placing them in a commercial chemical copper bath for copper plating.
[0080]The results on the panels were straight lines of copper with a line width between 178 to 182 pm and a distance of 300 pm between the copper lines.
[0081] Different patterns have been made with line width ranging from 5 pm to 3cm.
[0082]A grafting solution consisting of methacrylic acid (1.4 weight-%),
thioxanthone (0.01 weight-%) and methanol was prepared.
[0083]The solution was sprayed by an air spray gun to a panel made of COC polymer of 8 x 8 cm size. The dry thickness was 25 pm. Drying time (sample could be handle without damaging the dry grafting layer) was 40 seconds at room temperature.
[0084]The panels were irradiated with a 2W laser emitting light at 355 nm.
[0085]The samples were irradiated with an energy of 800 mJ/cm2. The spot
diameter was varied from 5 pm to 200 pm. The irradiated pattern was straight lines. The line width was varied from 5 pm to 5000 pm.
[0086] After irradiation were the samples washed in deionized water (DIW). In the next step were the samples activated in a commercial solution containing palladium (II) ions. The palladium ions were reduced to palladium metal by dipping the panel in a commercial reducing media. The panels were then washed in DIW before placing them in a commercial chemical copper bath for copper plating.
Line Width Defined pattern with high Film thickness
resolution
(pm) (pm)
5 Yes 0.7
10 Yes 0.6
40 Yes 0.7
100 Yes 0.7
200 Yes 0.5
500 Yes 0.7
Multiple scan
2000 Yes 0.6
Multiple scan
5000 Yes 0.7
Multiple scan
Example 6:
[0087] Different materials:
[0088]A grafting solution consisting of acrylic acid (1 .0 weight-%), thioxanthone (0.01 weight-%) and ethanol was prepared.
[0089]The solution was sprayed by an air spray gun to different panels (see table below) of 8 x 8 cm size. The dry thickness was 20 pm. Drying time (sample could be handle without damaging the dry grafting layer) varied from 30 to 50 seconds at room temperature.
[0090]The panels were irradiated with a 4W laser emitting light at 355 nm.
[0091 ]The samples were irradiated with an energy of 600 mJ/cm2. The spot
diameter was 120 pm. The irradiated pattern was straight lines of 180 pm with a distance of 400 pm between the lines.
[0092]After irradiation were the samples washed in deionized water (DIW). In the next step were the samples activated in a commercial solution containing palladium (II) ions. The palladium ions were reduced to palladium metal by dipping the panel in a commercial reducing media. The panels were then
washed in DIW before placing them in a commercial chemical copper bath for copper plating.
[0093]The results on the panels were straight lines of copper with a line width between 178 to 182 urn and a distance of 400 pm between the copper lines with film thickness of 6 to 8 μηι.
[0094]The following examples 7-9 were manufactured as for example 1 above.
Then a peel test was performed according to ASTM D1876 to determine the adhesion of the applied metal coating. Rz for the uncoated substrate was measured as defined in SS-EN ISO 4287:1998 and found to be lower than the values given below. According to SS-EN 4288 and SS-EN ISO 3274 the measurement conditions were rtip=2 pm, lr= 0.25 mm, In 1 .25 mm, It 1 .5 mm.
[0095] Example 7: main components are methacrylic acid, acetone, ethanol, and isopropyl thioxanthone on a high gloss surface of PA6 (Rz < 0,5 pm). Gives 14 N/cm in adhesion.
[0096] Example 8: main components are acrylic acid, methanol, ethanol, and
fluorenone on a surface of PA6 filled with 30 % glass fiber (Rz < 10 pm). Gives 17 N/cm in adhesion.
[0097]Example 9: Main components maleic acid, ethylacetate, and bensofenone derivative on a glossy surface of PA6 filled with 30 % glass fiber (< 2.0 pm between valley and peak). Gives 16 N/cm in adhesion.
Claims
1 . A method for application of a first metal on a substrate surface, said method comprising the steps: a) providing a mixture comprising at least one solvent, at least one polymerizable monomer, and at least one photoinitiator, wherein said at least one photoinitiator, said at least one polymerizable monomer, and said at least one solvent form an amorphous mixture without any crystals, wherein said at least one polymerizable monomer is able to polymerize to a polymer comprising at least one carboxylic group, and wherein said at least one polymerizable monomer is in monomer form in said mixture, b) applying said mixture at least partially on said substrate surface, said substrate surface comprises covalently bound hydrogen atoms, c) evaporating at least a part of said at least one solvent. d) activating said at least one photoinitiator by irradiation with light at a wavelength adapted to said at least one photoinitiator so that said at least one photoinitiator decomposes into at least one free radical, so that said at least one free radical initiates a polymerization reaction among said at least one polymerizable monomers and induce a reaction between said covalently bound hydrogen atoms on said substrate surface and a fraction of said at least one polymerizable monomers, to obtain polymers on the surface of said substrate, wherein said polymers comprise at least one carboxylic group, and wherein at least a fraction of said polymers formed are covalently bound to said surface, e) applying at least one selected from the group consisting of ions of at least one second metal and nanoparticles comprising at least one second metal, wherein said nanoparticles have an average diameter in the range from 1 to 100 nm, f) if ions of at least one second metal have been applied, at least partially reducing said ions of at least one second metal to metal,
g) depositing the first metal on at least one selected from the group consisting of the reduced ions of said at least one second metal and the nanoparticles comprising at least one second metal.
2. The method according to claim 1 , wherein said at least one solvent is evaporated to more than 80 % calculated by weight in step c).
3. The method according to any one of claim 1-2, wherein said at least one solvent is at least one solvent selected from the group consisting of methanol, ethanol, acetone, ethyl acetate, and ethylene glycol.
4. The method according to any one of claim 1 -3, wherein said at least one polymerizable monomer comprises at least one carboxylic acid group.
5. The method according to any one of claim 1 -4, wherein said at least one polymerizable monomer is at least one selected from the group consisting of methacrylic acid, acrylic acid, and maleic acid.
6. The method according to any one of claim 1 -5, wherein said at least one photoinitiator, is at least one photoinitiator selected from the group consisting of antraquinone, thioxanthone, i so propyl thioxanthone, chlorothioxanthone, xanthone, benzophenone, and fluorenone.
7. The method according to any one of claim 1 -6 wherein said at least one photoinitiator is activated in step d) by irradiation with light in a desired pattern on said substrate surface.
8. The method according to any one of claim 1-7, wherein said at least one photoinitiator is activated in step d) by irradiation with at least one type of light selected from the group consisting of laser light, focused laser light, and focused light.
9. The method according to any one of claim 1 -8, wherein said at least one photoinitiator is activated in step d) by irradiation with at least one selected from laser light, and light in combination with at least one mask.
10. The method according to any one of claim 1 -9, wherein at least one of the steps b, c, and d in claim 1 are performed in an environment with a reduced level of oxygen compared to a normal atmosphere in order to reduce oxygen inhibition of a radical polymerisation initiator.
1 1 . The method according to any one of claim 1 -10, wherein said substrate surface is a two dimensional plane.
12. The method according to any one of claim 1 -10, wherein said substrate surface is a three dimensional surface.
13. The method according to any one of claim 1 -12, wherein the substrate surface is treated with plasma before step b).
14. The method according to any one of claim 1 -13, wherein at least a fraction of polymers which are not covalently bound to the surface are washed away from said substrate surface after step d).
15. An object coated with a metal said object being at least partly coated with covalently bound polymers comprising carboxylic groups, said object further being coated with a metal on the covalently bound polymers, said object having a surface roughness Rz of less than 100 pm before coating measured according to SS-EN ISO 4287:1998, wherein the coating of the object has an adhesion equal to or larger than 10 N/cm, measured according to ASTM D1876.
16. The object according to claim 15, wherein the object to be coated comprises a polymer before application of the coating.
17. The object according to any one of claims 15-16, wherein the object is transparent.
18. The object according to any one of claims 15-17, wherein the substrate further comprises at least one selected from the group consisting of a filler, a pigment, and a fiber.
19. The object according to any one of claims 15-18, wherein said object having a surface roughness Rz of less than 50 μηη before coating.
20. The object according to any one of claims 15-19, wherein said object having a surface roughness Rz of less than 11 μιη before coating.
21. The object according to any one of claims 15-20, wherein said object having a surface roughness Rz of less than 2 μηι before coating.
22. The object according to any one of claims 15-21 , wherein the coating of the object has an adhesion equal to or larger than 14 N/cm, measured according to ASTM D1876.
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JP2015510794A JP6185986B2 (en) | 2012-05-07 | 2013-05-07 | Method for applying metal |
DK13723721.0T DK2847363T3 (en) | 2012-05-07 | 2013-05-07 | Method of applying metal |
EP13723721.0A EP2847363B1 (en) | 2012-05-07 | 2013-05-07 | A process for application of metal |
CN201380023532.0A CN104619882A (en) | 2012-05-07 | 2013-05-07 | A process for application of metal |
US14/533,126 US9889471B2 (en) | 2012-05-07 | 2014-11-05 | Process for application of metal |
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US201261643382P | 2012-05-07 | 2012-05-07 | |
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EP (1) | EP2847363B1 (en) |
JP (1) | JP6185986B2 (en) |
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Cited By (3)
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CN106471156A (en) * | 2014-07-10 | 2017-03-01 | 奥野制药工业株式会社 | Resin method for plating |
SE2050920A1 (en) * | 2020-07-24 | 2022-01-25 | Cuptronic Tech Ltd | Method for surface treatment prior to metallization |
WO2022018136A1 (en) | 2020-07-21 | 2022-01-27 | Ncapt Ab | METHOD FOR SURFACE TREATMENT PRIOR TO COATING and GLUING |
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CN108934127A (en) * | 2018-08-01 | 2018-12-04 | 珠海元盛电子科技股份有限公司 | A method of the quick preparation large-area circuits based on desktop printing |
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US20150056410A1 (en) | 2015-02-26 |
JP2015523464A (en) | 2015-08-13 |
WO2013167598A3 (en) | 2014-06-26 |
EP2847363B1 (en) | 2016-09-07 |
DK2847363T3 (en) | 2017-01-02 |
US9889471B2 (en) | 2018-02-13 |
EP2847363A2 (en) | 2015-03-18 |
JP6185986B2 (en) | 2017-08-23 |
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CN107475696A (en) | 2017-12-15 |
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